Published October 1998
| Version v1
Journal article
Mixed-Valent Regime of the Two-Channel Anderson Impurity as a model for UBe13
- 1. Department of Physics, The Ohio State University, Columbus, Ohio 43210-1106 (United States)
- 2. Institut fuer Festkoerperphysik, Technical University Darmstadt, 64289 Darmstadt (Germany)
- 3. Department of Physics, University of California, Davis, California 95616 (United States)
Description
We investigate the mixed-valent regime of a two-configuration Anderson impurity model for uranium ions, with separate quadrupolar and magnetic doublets. With a new Monte Carlo approach and the noncrossing approximation we find (i) a non-Fermi-liquid fixed point with two-channel Kondo model critical behavior, (ii) distinct energy scales for screening the low-lying and excited doublets; (iii) a semiquantitative explanation of magnetic-susceptibility data for U1-xThxBe13 assuming 60% - 70% quadrupolar doublet ground-state weight, supporting the quadrupolar-Kondo interpretation. copyright 1998 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 81
- Journal Issue
- 15
- Journal Page Range
- p. 3235-3238
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 30007787
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BERYLLIUM ALLOYS; KONDO EFFECT; MAGNETIC SUSCEPTIBILITY; THORIUM ALLOYS; URANIUM ALLOYS
- Descriptors DEC
- ACTINIDE ALLOYS; ALLOYS; MAGNETIC PROPERTIES; PHYSICAL PROPERTIES